chrome/browser/chromeos/input_method/accessibility.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/chromeos/input_method/accessibility.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/logging.h"
   9 #include "base/strings/utf_string_conversions.h"
  10 #include "chrome/browser/accessibility/accessibility_events.h"
  11 #include "chrome/browser/chromeos/input_method/input_method_util.h"
  12 #include "chrome/browser/profiles/profile_manager.h"
  13 #include "chromeos/chromeos_switches.h"
  14
  15 namespace chromeos {
  16 namespace input_method {
  17
  18 Accessibility::Accessibility(InputMethodManager* imm)
  19     : imm_(imm) {
  20   DCHECK(imm_);
  21   imm_->AddObserver(this);
  22 }
  23
  24 Accessibility::~Accessibility() {
  25   DCHECK(imm_);
  26   imm_->RemoveObserver(this);
  27 }
  28
  29 void Accessibility::InputMethodChanged(InputMethodManager* imm,
  30                                        bool show_message) {
  31   DCHECK_EQ(imm, imm_);
  32   if (!show_message)
  33     return;
  34
  35   // When Mode indicator is disabled, the previous IME massage and its
  36   // spoken feedback is used.  In that case, this module does not
  37   // provide a redundant spoken feedback.
  38   //
  39   // TODO(komatsu): When this is permanently enabled by defalut,
  40   // delete command_line.h and chromeos_switches.h from the header
  41   // files.
  42   if (CommandLine::ForCurrentProcess()->HasSwitch(
  43           switches::kDisableIMEModeIndicator))
  44     return;
  45
  46   // Get the medium name of the changed input method (e.g. US, INTL, etc.)
  47   const InputMethodDescriptor descriptor = imm_->GetCurrentInputMethod();
  48   const std::string medium_name = base::UTF16ToUTF8(
  49       imm_->GetInputMethodUtil()->GetInputMethodMediumName(descriptor));
  50
  51   AccessibilityAlertInfo event(ProfileManager::GetActiveUserProfile(),
  52                                medium_name);
  53   SendControlAccessibilityNotification(
  54       ui::AccessibilityTypes::EVENT_ALERT, &event);
  55 }
  56
  57 void Accessibility::InputMethodPropertyChanged(InputMethodManager* imm) {
  58   // Do nothing.
  59 }
  60
  61 }  // namespace input_method
  62 }  // namespace chromeos